Inner diameter: 11mm 【High-Quality Rubber】 The tips of trekking poles are made of rubber material, which is lightweight, durable, wear-resistant, and flexible. Fits all standard trekking poles with a diameter of approximately 11mm. * Immediate purchase welcome * Free shipping * First come, first served (only one available) * Feel free to comment! ・Please understand that items are stored at home and will be shipped with simple packaging before purchasing (⁎ᵕᴗᵕ⁎) ・Please check the actual photos for the condition of the product. ※To reduce shipping costs and offer lower prices, we may remove the item from its box for shipping. * Returns are not accepted except for defective products, so please check the photos before purchasing. If you have any issues, please contact us BEFORE leaving a review ( *ˊᵕˋ)✩‧₊ Yuyu (Japan Post) to Rakuraku Mercari (Yamato Transport) or vice versa, may be changed. #riishop 24-24 1299-96